Allosaurus

The video explores the life of Allosaurus, focusing on a well-preserved skeleton named Big Al. Discovered in 1991, Big Al's bones reveal insights into his brain, vision, and movement, suggesting similarities to crocodiles and ostriches. Despite rapid growth like birds, Big Al faced numerous challenges, including injuries and infections, leading to his early death likely due to thirst during a drought. His preserved skeleton allows scientists to reconstruct his life story 145 million years later.

What significant discovery in 1991 helped scientists learn more about the Allosaurus?

• A fossilized dinosaur egg

• A complete set of dinosaur footprints

• A well-preserved Allosaurus skeleton

• A new species of dinosaur

How did the shape of Big Al's brain suggest he might have behaved?

• Like a bird

• Like a crocodile

• Like a lion

• Like a lizard

What does the overall shape of Big Al's skeleton suggest about his movement?

• He moved like a lion

• He moved like a snake

• He moved like a crocodile

• He moved like an ostrich

What evidence suggests that Big Al did not reach adulthood?

• His slow growth rate

• His large eyes

• His damaged bones

• His small size

What was the likely cause of Big Al's death?

• A fight with another dinosaur

• A broken tailbone

• Starvation due to lack of food

• An infection leading to thirst during a drought